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Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to

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Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to A. the heating effect of current alone B. hysteresis loss alone C. both the heating effect of current and hysteresis loss D. intense sunlight at noon Check Answer Complaint Here As Incorrect Question / Answer

Related Questions Wind is often found to blow in a hot summer day due to. A. conduction of heat between air and soil on the Earth B. radiation from the soil C. convection current of air D. None of the above Check Answer Complaint Here As Incorrect Question / Answer There was a very large proliferation of castes during the early medieval period due to A. Both 'a' and 'b' B. localisation of castes C. transformation of crafts and occupations into castes D. emergence of large number of mixed castes Check Answer Complaint Here As Incorrect Question / Answer The import of crude oil and petroleum done from national oil companies of producer countries, which have a net exportable surplus of oil is by A. term contracts B. term tenders C. monthly tenders D. All the above Check Answer Complaint Here As Incorrect Question / Answer Light waves projected on oil surface show seven colours due to the phenomenon of A. polarisation B. refraction C. reflection D. interference Check Answer Complaint Here As Incorrect Question / Answer On a rainy day, small oil films on water show brilliant colours. This is due to A. dispersion B. interference C. diffraction D. polarization Check Answer Complaint Here As Incorrect Question / Answer

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